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A carbohydrate-based biodegradable thermoplastic starch material and a preparing method and application thereof

A carbohydrate and thermoplastic starch technology, which is applied in the field of carbohydrate-based biodegradable thermoplastic starch materials and preparation, can solve the problems of high price and poor mechanical properties, and achieve the advantages of improving tensile strength, improving water sensitivity, and increasing the output of agricultural products. Effect

Pending Publication Date: 2019-01-01
展恒凯文科技(深圳)有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional biodegradable compost-grade bioplastics such as PHA, PLA, PCL, PBS, PBAT, etc. have poor mechanical properties and are expensive, and may not be completely degradable in all environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of carbohydrate-based biodegradable thermoplastic starch material:

[0026] (1) Take 63kg cornstarch and 7kg potato starch in turn, add them to the high-speed mixer, turn on the power and stir for 30 minutes, then put them in the oven, set the temperature of the temperature control instrument to 70 degrees, and set the baking time to 24 Hour;

[0027] (2) Take 20kg of glycerin and 10kg of choline chloride in turn, add them to the high-speed mixer, turn on the power and stir for 30 minutes, then put them in the oven, set the temperature of the control instrument to 70 degrees, and set the baking time to 6 Hour;

[0028] (3) Add 70kg of baked corn and potato starch and 30kg of glycerol choline chloride into the high-speed mixer in turn, turn on the power and stir for 30 minutes, then put them in the oven, and set the temperature of the temperature control instrument to 50 degrees , set the baking time to 3 hours;

[0029] (4) Put the baked material...

Embodiment 2

[0031] Thermoplastic starch granules are tested ready to make bio-based polymer plastics:

[0032] Get 40kg thermoplastic starch granules successively, 5kg maleic anhydride, 10kg POE plastics, 45kg PE plastics, join in the high-speed mixer, turn on the power and stir for 30 minutes, then put into the twin-screw extruder for mixing, melting, and Extrude, turn on the power of the twin-screw extruder, heat the extruder, and set the temperature of the temperature control instrument to: 150 degrees in the first zone, 170 degrees in the second zone, 170 degrees in the third zone, 170 degrees in the fourth zone, The fifth zone is 160 degrees, the sixth zone is 150 degrees, and the screw speed is adjusted to 250-300rpm. After the molten strip is extruded from the die discharge hole, it is drawn to the fan transmission box for air cooling, and then until the pelletizer is cut into cylindrical bio-based polymer plastic particles with a particle size of 2-3mm. Finally the bio-based poly...

Embodiment 3

[0034] The thermoplastic starch granules are tested and prepared to make biodegradable and compostable bioplastics (biodegradable&compostable bioplastic):

[0035] Get 40kg thermoplastic starch granules successively, 5kg maleic anhydride, 10kg PLA plastics, 45kg PBAT plastics, join in the high-speed mixer, turn on the power and stir for 30 minutes, then put into the twin-screw extruder for mixing, melting, and extrude. Turn on the power of the twin-screw extruder, heat the extruder, and set the temperature of the temperature control instrument to: 150 degrees in the first zone, 170 degrees in the second zone, 170 degrees in the third zone, 170 degrees in the fourth zone, and 170 degrees in the fifth zone 160 degrees, the sixth zone 150 degrees, adjust the screw speed to 200 ~ 250rpm. After the molten strip is extruded from the discharge hole of the die head, it is drawn to the fan transmission box for air cooling, and then cut into cylindrical biodegradable composting grade bio...

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Abstract

The invention belongs to the technical field of biological materials and particularly relates to a carbohydrate-based biodegradable thermoplastic starch material and a preparing method and applicationthereof. The thermoplastic starch material includes a starch material, a plasticizer and a modifier, and is prepared by forming a novel modified plasticizer from the plasticizer and the modifier according to a weight ratio of 2:1, and then mixing the starch material and the novel modified plasticizer according to a weight ratio of 2.5-3:1. The preparing method includes (1) baking the starch material at 70-80 DEG C for 24 h; (2) adding the novel modified plasticizer into a stirrer, fully stirring the mixture and baking the mixture in a baking oven; and (3) fully mixing and stirring the baked raw materials in the stirrer for 0.5-1 h, then baking the obtained mixture in the baking oven at 50-60 DEG C for 3-4 h, and extruding the baked mixture by a twin-screw extruder at 140-160 DEG C to obtain the carbohydrate-based biodegradable thermoplastic starch material.

Description

technical field [0001] The invention belongs to the technical field of biomaterials, and in particular relates to a carbohydrate-based biodegradable thermoplastic starch material and its preparation method and application. Background technique [0002] Traditional petrochemical polymer plastics such as PP, PE, PO, PS, POE, ABS, SBS, SEBS, EVA, etc. are not biodegradable. Traditional biodegradable compost-grade bioplastics such as PHA, PLA, PCL, PBS, PBAT, etc. have poor mechanical properties and are expensive, and may not be completely degradable in all environments. put some pressure on the environment. Contents of the invention [0003] The object of the present invention is to provide a carbohydrate-based biodegradable thermoplastic starch material as well as its preparation method and application. [0004] Technical scheme of the present invention is: [0005] A carbohydrate-based biodegradable thermoplastic starch material is composed of starch material, a plastici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L67/02C08L67/04C08L3/02C08L23/08C08K5/053C08K5/19
CPCC08L23/06C08L67/02C08L2201/06C08L2203/10C08L2203/16C08L2205/025C08L2205/035C08L3/02C08L23/0815C08K5/053C08K5/19C08L67/04
Inventor 刘德宗
Owner 展恒凯文科技(深圳)有限责任公司
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